Armchair



FIG. 1 is a front elevational view of an armchair showing my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a top perspective view;

FIG. 4 is a bottom perspective view; and,

FIG. 5 is a right side perspective view, the left side being a mirror image thereof. 

The ornamental design for an armchair, as shown and described. 